Answered by testike
my husband had this same problem with his phone this weekend. usually the unlock code is 1234. but if u try too many times it will shut down. the best thing to do is just to call cingular. they can unlock the sim card from their computer.they said there was no guarantees that i still might have to purchase a new sim card. they got it unlock but had i had to buy a new one it would have been 25.00 Good Luck :)

Answered by helenrai
Hi you can easily remove your sim lock by using unlock code. If you need
unlock code visit this site Mobile-unlocker.com here you can get the
unlock code and unlock your samsung e317. To get the
code you need to specify the following details which country is
locked now,network provider and imei number. Then they send unlock code
through email.